General :: Embed "DISPLAY" Variable In "su" Command?
Sep 8, 2010
I'm trying to create mozilla profile for another user from command line using su. When I'm trying from X, this will work. su myuser -c 'mozilla -CreateProfile newprofile' But my goal is to embed this to a script and it will execute only in command line mode. If I try this, from a command line, It also works: ISPLAY=1.0 mozilla -CreateProfile newprofile how to embed "DISPLAY" variable in "su" command, cause this fails: su myuser -c 'DISPLAY=1.0 mozilla -CreateProfile newprofile'
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Jun 30, 2011
Say I have arrays of constants code...
Is it possible to induce bash to interpret the ${tbl[1]} part to its actual value (1-6) when I reference those particular entries in the arrays?
Using this instruction to do so code...
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Feb 20, 2010
sed -i 's/EXTRAVERSION =/EXTRAVERSION = -$(date +%D)/g' file would search in the file, file for the string: 'EXTRAVERSION =', and change every instance it finds to 'EXTRAVERSION = -02/20/2010'. BUT IT DOESN'T.It changes it to 'EXTRAVERSION = $(date +%D)', literally. I've tried single and double quotes in almost every possible configuration. Is there any way to tell sed that one desires the command output, not the literal text?
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Dec 26, 2010
When i ssh to server using -X, i always confuse about which display number i should export. It seems to me sometimes the display number has been used by something, so what i can do is only
export DISPLAY=localhost:0 && xclock
export DISPLAY=localhost:1 && xclock
export DISPLAY=localhost:2 && xclock
[code]....
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Jun 28, 2010
How to install oracle? I have been tried many times but seems can't resolve the DISPLAY issues.
All installer requirements met.
Use the following command to view the current DISPLAY environment variable setting:
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Dec 25, 2009
my java version is this
java version "1.6.0_15"
Java(TM) SE Runtime Environment (build 1.6.0_15-b03)
Java HotSpot(TM) 64-Bit Server VM (build 14.1-b02, mixed mode)
And when i am trying to run my gameserver scripts i get this error.
root:~# /home/l2jserver/login # ./L2JConfig.sh Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:159)
at java.awt.Window.<init>(Window.java:431)
at java.awt.Frame.<init>(Frame.java:403)
[code]....
This is not my desktop computer but my remote server.
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Jul 28, 2011
i am trying to declare an environmental variable in the /etc/profile' (as per the tutorial i'm following) but when i declare it and do an echo i get nothing.Here's what i've done so far..nside /etc/profile:
# /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
# and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).
if [ -d /etc/profile.d ]; then
[code]...
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Apr 20, 2010
I was reading that if I want to do a one time scheduled command, I should use at, which I've never done, as opposed to cron, which i'm kinda familiar with. But what I want to do is reboot my server at 3am tomorrow and force it to check the file systems with a shutdown -rF. For this do I even need to use "at" or could I just say shutdown -rF 3:00.Will that also know that I mean 3am tomorrow and not say in 3 minutes from now or 3pm?
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Mar 3, 2010
I tried using the tail command in my shell script and storing that value in a variable a but an error keeps coming. Is there any other way to store the output of a command into a variable. Cannot Read text from text file and store it in a variable using shell script. The thing is I need a number from the file new.txt and use that number in my script
#!/bin/bash
a = `tail -1 new.txt|head -n 1`
echo $a
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Apr 19, 2011
I want to store the result of wc -l as a variable so I can use it later in my script...so far unsuccessfully.
I have tried this:
set `echo awk '{ print $1, $6}' | wc -l` | echo $1
but it is far from working.
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Feb 18, 2010
When I run this command from shell, it runs ok
export REVS=`svn info svn+ssh://svn.myone.ca/var/svn/story/trunk/lib |grep 'Last Changed Rev:'| awk -F: '{print $2}'`
However when I save it into a file called test.sh (of course, I chmod it with +x), I got error "export: 2: bad variable name"
Here is the file:
#!/bin/bash
export REVS=`svn info svn+ssh://svn.myone.ca/var/svn/story/trunk/lib |grep 'Last Changed Rev:'| awk -F: '{print $2}'`
I am using ubuntu.
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Mar 26, 2011
For example, when using bash you can use
Code:
to execute the previous command or
Code:
!<number> to execute the Nth command(use history to see the list). Or you can use
Code:
cd !-2:1
to cd into the value in the first field that was executed 2 commands ago Anyhow, say I run a command and the output is a path. Any way to cd and then some variable where OUTPUT of the previous command was stored? A variable that always stores the OUTPUT of the last command.
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Feb 9, 2011
I do this:
Code:
a@b:~$ export A=hi
a@b:~$ echo $A
hi
a@b:~$ bash -c "export A=blah; echo $A"
hi
a@b:~$
Why doesn't the bash command print the new value of $A? Is there a way to make it do so?
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Aug 3, 2011
I am using CentOS5.5 & everytime it is showing command not found. If I export the path as below it will be working fine until a reboot. Again same error i.e command not found if I open new terminal. Every time I am exporting as below:
#export PATH=/sbin/:$PATH
#export PATH=/usr/sbin/:$PATH
#export PATH=/usr/bin/:$PATH
#export PATH=/bin/:$PATH
How can I set these permanently as that the paths should automatically be exported for everyone user whenever the system boots. And command completion also should happen for eg. #fdi (press tab), then it should show available options such as fdisk, etc.
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May 23, 2010
I want to use PROMPT_COMMAND variable to build a history of all the commands i execute. So Basically i want to append the last executed command to my own command log file. How can i find the last executed command ?
I want to add PROMPT_COMMAND="echo $last_executed_command >> my_command_log" But I am not sure how to find the last executed command
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May 14, 2010
I am trying to embed expect in my bash script to perform some tasks
USER="username"
PASS="password"
NAMES=`cat full_list`
for i in $NAMES
do
echo $i
[Code]....
The script initially reads a files containing a list of rpm's on each line and then spawns the rpm2ipc command which uploads the particular rpm to a repository. During this process it tries to enter the credentials, where it is failing.
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Aug 2, 2009
Ive been using linux for a while but I am just getting into shell scripting, im currently trying to get a simple script for finding and copying files powered by the command:
Code:
This works fine from the command line but when put in a script such as:
Code:
Code:
with the keyboard inputs for $fc1 and $fc2 being *.doc and ~/test respectivly. The only problem i can see is the xargs -ivar "var" part possibly needing $var to be defined?
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Nov 19, 2008
suppose i store the history number of a command say :
1004 cat file
Then now i want to run it like : !1004 but by using a variable.
command=1004
!$command
i am getting errors like :
command=1004command
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Jun 9, 2010
I am connected to work via a VPN. I am logging into a Solaris box at work from OpenSuse 11, using ssh -X. I would like to start a GUI on the solaris box. The problem is that I don't know what value to give the DISPLAY variable. Is it the local internal LAN ip address, for my machine? I did try that, and I tested it using, xterm on the solaris machine. It says it can't open the display. I have enabled remote connections on my machine using xhost +.I have to run a performance test on the Solaris box at 7am in the morning... so need to find out how to start the GUI
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Sep 26, 2010
Is there a conky variable that displays the Ubuntu version (ex 10.04)?
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Jan 4, 2010
I have a problem to use echo to display the content of a variable.
This is what I do:
Code:
#!/bin/bash
USAGE="Usage: name [OPTIONS] [DIRECTORIES]"
echo $USAGE
When I run this little script I get the following output:
Usage: name [OPTIONS] R
So I think that [DI might be some sort of escape sequence. But I do not know how to unescape it. Does anyone have a hint for me?
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Sep 2, 2010
How to set that if user use command to display all process, then he'll see only his own processes?
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Feb 17, 2011
how to assign a local variable value to a global variable....
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Apr 16, 2011
I am supposed to create an environment variable with the PRINTER variable, which should resolve to the word sales. Would the command be like this?: env PRINTER - NAME=SALES (is this the command to create that variable with resolving the word sales to it?)
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Nov 26, 2010
Code:
# echo $PATH
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
How would i write a script to display permission on each folders in $PATH variable below format.
drwxr-xr-x 2 0 root 4096 Nov 24 14:51 /usr/kerberos/sbin
drwxr-xr-x 2 0 root 4096 Nov 24 14:51 /usr/kerberos/bin
This is what i did but since it require awk programming i m stuck.
Code:
ls -ld <directoryinpath>
Code:
# echo $PATH | awk -F ":" '{ print $1 }'
/usr/kerberos/sbin
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Mar 18, 2011
IN 3.5.10 I am able to display the full $PROMPT_COMMAND environment variable in the Konsole title bar. Kind of handy and I did not need to display that information in the $PROMPT variable.
In 4.5.5 I am having trouble figuring out how to make that work correctly. The title bar displays only the directory name rather than the full path and user name.
This is my $PROMPT_COMMAND:
history -a;echo -ne "33]0;${USER}@`uname -n`: ${PWD}07"
All I see in the title bar is:
dirname: bash
I should see:
username@hostname: full path to present working directory
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Feb 23, 2010
shell command to display contents of a file? Like that of .txt or .html
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Oct 18, 2010
and how to list all files in a directory including full path, owner, group and permissions for each file
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Mar 19, 2010
Can someone please tell me how I can use grep to display all users running a particular command.
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Oct 26, 2010
I need a command to display the next info from my hdd:
device name - filesystem - uuid - mount point
I found blkid but the mount point is not displayed, I've already look in man but there is no parameter for that
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